3 papers
cond-mat.mes-hall2025
Green's function expansion for multiple coupled optical resonators with finite retardation using quasinormal modes
Robert Meiners Fuchs, Juanjuan Ren, Stephen Hughes +1
The electromagnetic Green's function is a crucial ingredient for the theoretical study of modern photonic quantum devices, but is often difficult or even impossible to calculate di…
quant-ph2025
Dissipation in the Broadband and Ultrastrong Coupling Regimes of Cavity Quantum Electrodynamics: An Ab Initio Quantized Quasinormal Mode Approach
Chris Gustin, Juanjuan Ren, Sebastian Franke +1
Phenomenological approaches to photon loss have long been the workhorse of cavity-QED, but prove inadequate in the presence of sufficiently broadband light-matter interactions. We…
quant-ph2025
Gain-modified emission dynamics between two quantum emitters in a plasmonic gain cavity system
Becca VanDrunen, Juanjuan Ren, Sebastian Franke +1
We present a general theory of gain-modified emission dynamics between two quantum emitters (two level systems) in a linear gain medium, demonstrating how gain modifies the usual r…